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A New Technique for Chemical Deposition of Pt Nanoparticles and its Applications on Biosensor Design
Author(s) -
Wang Aifang,
Ye Xiaoyan,
He Pingang,
Fang Yuzhi
Publication year - 2007
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200703890
Subject(s) - polypyrrole , glucose oxidase , biosensor , pyrrole , amperometry , polymerization , nanoparticle , electrode , deposition (geology) , immobilized enzyme , chemistry , nanotechnology , catalysis , materials science , polymer , chemical engineering , combinatorial chemistry , electrochemistry , organic chemistry , enzyme , sediment , paleontology , engineering , biology
A new glucose biosensor design based on glucose oxidase (GOD) immobilized by polypyrrole has been described in this paper. The polymerization of pyrrole was initiated by a hexachloroplatinate which itself was reduced into Pt nanoparticles and thus served as a catalyst for the H 2 O 2 oxidation. Properties of the produced GOD modified electrode were examined and the activity of the entrapped enzyme was determined by basic application on the amperometric detection of glucose. Much better results were found comparatively with the enzyme electrode for which the enzyme was entrapped by the electrochemically polymerized polypyrrole. This kind of technique for Pt nanoparticles deposition can be generalized to many cases where polypyrrole is used.